Test files linted

test/countOccurrences/countOccurrences.test.js

@@ -6,4 +6,4 @@ test('countOccurrences is a Function', () => {
 });
 test('Counts the occurrences of a value in an array', () => {
   expect(countOccurrences([1, 1, 2, 1, 2, 3], 1)).toEqual(3);
-});  
+});